On CBS' The Late Late Show Thursday, James Corden asked Cate Blanchett, Jeff Goldblum, Chris Hemsworth, Tom Hiddleston, Mark Ruffalo and Tessa Thompson to crash a screening of Thor: Ragnarok and perform a live-action rendition of the Marvel blockbuster (in theaters now). "Will they be mad that I'm interrupting the film? Possibly. You know, wherever there is change, people will call it 'disruption,'" Corden began. "So I guess what I'm saying is, 'Who gives a f--k?'"

The cast had its reservations about Corden's new format. "Is Thor 4D a practical business model? Probably not, because we can't perform live in every movie theater in America," said Hiddleston, who stars as Loki. "But perhaps they can take one performance and stream it live."

After a moment, it hit him. "Oh," Hiddleston realized. "That's just a movie, isn't it?" Blanchett, who stars as Hela, was more succinct: "I think those poor people just want to watch the movie."

(No one polled fans at The Grove's Pacific Theater, but she might be right.)

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Unlike the theatrical version of Thor: Ragnarok, Corden chose to narrate the story.

The bit included plenty of cheap costumes and preposterous props, but in a show of solidarity, the cast was committed to giving the performance their all—for a little while, anyway. During the "brief, 45-minute intermission," cameras followed Blanchett backstage as she got on the phone with her agent. "You've got to get me out of here," she whispered. "It's a huge mistake." Asked who organized the play, Blanchett said, "James Jordan? Corden? I don't know who he is."

Goldblum, eventually, decided to find a seat and enjoy the show as an audience member.

After his final battle scene with Blanchett, Hemsworth was feeling fired up. "That was such a rush! I want to do all my movies in 4D," he shouted backstage. "Do we know what 4D means?"